Story highlights Jeh Johnson says the nation is safer from 9/11 style attacksTerrorist-inspired 'lone wolf' attacks are more of a threat now than 15 years ago, he saidWashington (CNN) Homeland Security Secretary Jeh Johnson said Sunday the threat of terrorist-inspired "lone wolf" attacks is "the thing that keeps me up at night" 15 years after the September 11, 2001, terrorist attacks. "We're better now at detecting the 9/11-style attacks, but it's more challenging with this new environment that we're in." Johnson said he could see the towers collapse from his Manhattan office window on 9/11, when he was an attorney in private practice. "We're safer when it comes to the 9/11 style attacks. Our intelligence community, our law enforcement community, are pretty good at connecting those types of dots," Johnson said.

Source: CNN September 11, 2016 13:14 UTC